Malicious PDF — malware analysis report

Static analysis result for SHA-256 f37aaeebafef6c2a…

MALICIOUS

PDF

98.5 KB Created: 2021-03-22 20:41:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 342467a4c4a1aca898a602847becb719 SHA-1: dcca4ff1b47e1d719eeb7b12d5c575adc1eb1db4 SHA-256: f37aaeebafef6c2a74bb5af86c0328fdc3f7a42ea2cbd7812e5ebd9c1c55e7ae
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing or trojan. The document body, though heavily obfuscated, suggests a lure related to a game guide, which is a common tactic for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://bologen.ru/wix?keyword=poe+twilight+temple+guide
    • https://cdn-cms.f-static.net/uploads/4464865/normal_601fc4d6bada5.pdf
    • https://sarogixi.weebly.com/uploads/1/3/0/8/130813770/sanejeboref.pdf
    • https://zebonusifok.weebly.com/uploads/1/3/4/5/134509505/56634f05.pdf
    • https://rebageronamit.weebly.com/uploads/1/3/0/7/130775484/9615364.pdf
    • http://sevowina.medianewsonline.com/33857226038.pdf
    • https://cdn-cms.f-static.net/uploads/4413848/normal_602d39bf3483f.pdf
    • http://davorivugexawu.sportsontheweb.net/adventure_tourism_in_nepal.pdf
    • https://static.s123-cdn-static.com/uploads/4471512/normal_5fe1a733c3a3c.pdf
    • https://static.s123-cdn-static.com/uploads/4465010/normal_6007ed06c54bc.pdf
    • https://cdn-cms.f-static.net/uploads/4451355/normal_603fd4398e5fd.pdf
    • http://wejaduz.mypressonline.com/8064184260.pdf
    • https://cdn.sqhk.co/zupodejadofe/rhhjahh/crossword_solver_game_plan.pdf
    • https://nuvisinuxaxo.weebly.com/uploads/1/3/1/3/131383681/wibogovinuxev.pdf
    • http://fajesamosini.sportsontheweb.net/70380300044.pdf
    • https://cdn.sqhk.co/rosomugimo/cmfieje/48454229028.pdf
    • https://cdn-cms.f-static.net/uploads/4428054/normal_603f96d2d3c3b.pdf
    • http://luxomozuk.mypressonline.com/tujopuralexanesadamu.pdf
    • https://static.s123-cdn-static.com/uploads/4448542/normal_5fc8582856811.pdf
    • https://cdn.sqhk.co/bomoxale/YgcYcKh/sawezobajirapetilibomuku.pdf
    • https://cdn.sqhk.co/sebutarukaw/hZAUegi/schema_electrique_interrupteur_crepusculaire_legrand.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000115e9.bin
08c6d54d0f639234eeb94bf6857e9800f401ee21277385e19e97f4f650237029		 pdf-font-stream PDF embedded font (sfnt) at offset 0x115E9 5328 bytes
font_01_sfnt_off00012844.bin
91804d29a70fbb36738b7344158e26aeffd816c9c773bbc821977fcf3416bd26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12844 4980 bytes
font_02_sfnt_off00013925.bin
a5fb0635f3cf181e53b37f3cfd286c8d030dc77fb0b07bc919ef7651f4b09dc0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13925 11536 bytes
font_03_sfnt_off000160ba.bin
d8394fd67898d36e673dd53d2a349a717ec4e702fc30f96667fcb4023b2b13a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x160BA 18544 bytes

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